As you already said, tron is pure marketing and hype, dont fall for this.
eth is already established as a standard technology and are well accepted all sorts of businesses.

Blockchain technology is here to stay regardless of its current price. The decentralized nature of crypto is essencial for a free and open society. So, i'm pretty sure it will stay as long as we have our freedom to express ourselves as we see fit.

I think we are repeating what happened in 2015 when crypto market was stagnant through that year untill august, when the 2016 bitcoin halving was approaching and the market started the next bull run from $200.

Usually, I like to invest in coins that have liquidity because if it has small amounts on the book, you may lose a lot if you buy a great portion of that coin..

No investment has a guaranteed profit. That's a huge RED FLAG.